Insulated support for electrical conductors



L. STEINBERGER.

INSULATED SUPPORT FOR ELECTRICAL CONDUCTORS.

APPLICATION FILED SEPT. 24, 1919.

1,3423 1 2. Patented June 1, 1920.

IIVVE/VTUR v UNITED STATES PATENT OFFICE.

LOUIS STEINBERGER, OF BROOKLYN, NEW YORK.

INSULATED SUPPORT FOR ELECTRICAL CONDUCTOBS.

Specification of Letters Patent.

Patented June 1, 1920.

Application filed september 24, 1919. Serial No. 325,949.

' State of New York, have invented certain new and useful Improvementsin Insulated Supports for Electrical Conductors, of

whichthe followingis a specification.

My invention relates to an improved insulated support for electricalconductors for high frequency and high tension currents. The structureis especially adapted for use in radio apparatus wherein the contact orslider is mounted to have a mechanical and consequently an electricalconnection with the conductor coils. f

One of the objects of my invention is to provide a hollow elongated bodyof insulating material having metallic strips forming helical coilssecured at intervals to the inner and to the outer surface of theelongated body, the remaining (portions of the metallic strips beingexpose Another object of the invention is to provide a hollow elongatedbody of insulating material having conducting strips in the form ofhelical coils secured at intervals respectivel to the outer surface andto the inner sur ace of the elongated body, the points of securement onthe respective surfaces alternating with respect to each other.

Another object of the invention is to provide a hollow elongated body ofinsulating material, the outer surface of which is so shaped as to havea plurality of flat sides situated at angular positions withrespect lcenter of the flat sides forming to each other, and the inner surface isalso provided with similarly arran ed fiat sides in combination withstiips 0 metal having the shape of helical coils, one of said stripsbeing secured to the insulating material at intervals substantially atthe the inner surface, and the other strip being secured to the outersurface of the insulatingbody at the angles formed by the adjacent flatsides, ventilating spaces being formed between the said strips and therespective surfaces of the insulating body.

Other objects will appear from the subjoined specification andclaims;

Referring to the'drawings:

Figure 1 is a view in' vertical section of a structure embodying oneform of my invention, taken on line 11 of Fig. 3.

Fig. 218 a view .partly in vertical sec- 7 tion.

tion and partly in side elevation of a structure embodying another formof my inven- Flg. is a plan view of the structure shown either in Fig. 1or Fig. 2.

Figs. 4 and 5 are fragmentary portions of the metal strips forming thecoils.

The insulating material from which the body is formed may be of anysuitable materlal for that purpose but it is preferred to use theinsulating material which is well known in-the art as electrose, and theconductor is made of any suitable conductlng metallic material,preferably copper.

he hollow elongated body of insulating materialis provided with aplurality of flat surfaces longitudinally arranged thereupon, each flatsurface beln angularly situated with respect to its a jacent flatsurface. The fiat surfaces of the outer wall are parallel respectively!to the flat surfaces of the inner wall and equal in number thereto. Thusarranged the horizontal cross section of the insulating body will beeither triangular, rectangular, hexagonal, octagonal and so forth, orthe fiat surfaces constituting the side of the body may be elther five,seven, nine, and so forth, in number, all as will be clearly understood.

I have chosen to illustrate in the figures of the drawing an elongatedbody provided W1tl1 lX pairs of flat surfaces constituting respectivelythe outer and the inner wall of the body, the shape of which inhorizontal cross-section is hexagonal. This is deemed sufii'cient toclearl disclose my invention without unnecessarily multiplying thesheets of the drawings.

Referring to the drawings, 10 is a hollow Metallic strips 12 and 12,each forming helical coils as shown, are secured respectively to theouter and inner walls of the hollow elongated body of insulatinmaterial. The outer strip 12 is secure tervals to' the angles formed bythe intersection of the sides A and B, B and C, C and D, D and E, E andF, and F and A,

and the inner coil 12 is secured to the surat in- I.

faces A, B, C',D', E, and F forming"- material.

the inner wall of the insulating e secured re- The strips 12 and 12 mays ctively to the outer and inner walls of tlif. hollow body ofinsulating material so that the curve of one coil is coincident with thecurve of the other coil, as clearly shown in Fig. 1, or the coils 12 and12 may be alternately arranged with respect to each other, as shown inFig. 2. It will be seen that spaces 15 are formed between the inner edgeof the strip 12 and the flat sides forming the outer wall, whichopenings may be utllized for ventilating and cooling pur-- poses, andlikewise for the samepurpose spaces 16 are formed between the outer edgeof the coil 12 and the angles formed by the inner surfaces A, B, C, D,E, F intersecting with each other.

In Figs. 4 and 5 I have illustrated holes 20 or roughened spaces 21 onthe strips forming the coils, by means of which the coils may be moreeffectively anchored or secured to the sides of the insulating body.

As stated above, the insulating body may be made of any approvedinsulating material, and when made of insulating material which can bemolded into the form desired, the helical conducting coils are securedor embedded into the insulating material (1111- in the process ofmolding. When the inen ating body is made of fire-proof material, suchas porcelain, the helical coil may be secured to the insulating body bymeans of cement or other securing material, all as well understood inthe art.

As will be seen, the structure described may be so mounted that in usethe contact or slider can revolve and travel up and down along thehelix, the body of the insulator remaining stationary, or else thecontact or slider can remain fixed and the elongated insulating body mayrotate, so that the metallic strip will remain always in contact withthe slider. In this latter case the elongated body of insulatingmaterial as it rotates will move in the direction of its axis.

As changes of construction could be made within the scope of myinvention, it is intended that all matter contained in the abovedescription or shown in the accompanying drawings shall be interpretedas illustrative and not in a limiting sense.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. As an article of manufacture, an elongated hollow body of insulatingmaterial, the outer and inner walls of which are provided respectivelywith flat sides extending longitudinally thereof, each side of each wallbeing angularly situated with respect to its ad acent side incombination with helical conductin coils secured respectively to theouter wa and to the inner wall at pomts uniformly spaced apart, theremaining portions of the coils being exposed to form electricalcontacts.

2. As an article of manufacture, an elongated hollow body of insulatingmaterial, the outer and inner walls of which are rovided respectivelywith flat sides extendin lon 'tudinally thereof, each side of eac wallbeing angularly situated with respect to its ad acent side incombination with helical conducting coils secured respectively to theouter wall and to the inner wall at points uniformly spaced apart,providin ventilating spaces between the coils an Walls, the remainingportions of the coils being exposed. to form electrical contacts.

3. As an article of manufacture, an elongatbd hollow body of insulatingmaterial, the outer and inner walls of which are provided respectivelywith fiat sides extending longitudinally thereof, each side of each wallbeing angularly situated with respect to its ad acent side incombination with helical conductin coils molded respectively to theouter wal and to the inner wall at points uniformly spaced apart, theremaining portions of the coils being exposed to form electricalcontacts.

As an article of manufacture, an elongated hollow body of insulatingmaterial, the outer and inner walls of which are provided respectivelywith fiat sides extending longitudinally thereof, each side of each wallbeing angularly situated with respect to its adjacent side incombination with heli cal conducting coils molded respectively to theouter wall and to the inner wall at points uniformly spaced apart,forming ventilatin openings between the respective coils an the walls towhich they are secured, the remaining portions of the coils beingexposed to form electrical contacts.

5. As an article of manufacture, an elongated hollow body of insulatingmaterial, the outer and inner walls of which are rovided respectivelywith parallel fiat sides extending longitudinally thereof, each side ofeach wall being angularlysituated with respect to its adjacent side incombination with helical conducting coils secured respectively to theouter and inner wall and alternately arranged with respect to eachother.

6. As an article of manufacture, an elongated hollow body of insulatingmaterial, the outer and inner walls of which are rovided respectivelywith parallel flat sides extending longitudinally thereof, each side ofeach wall being angularly situated with respect to its adjacent side incombination with helical conductin coils secured respectively to theouter an inner wall at points alternate] arranged with respect to eachother, bo h vertically and horizontally.

7. As an article of manufacture, an elon- 'vided respectively with 8. Asan article of manufacture, an elongated hollow body of insulatingmaterial, the outer and inner walls of which are proextendinglongitudinally thereof, each side of'each wall being angularly situatedwith respect to its adjacent side in combination with helical conductingcoils secured respectively to the outer and inner wall at pointsalternately arranged with respect to each other, providing ventilatingspaces'between the points of securement and the walls of the insulatingbody.

9. As an article of manufacture, an elongated hollow body of insulatingmaterial, the outer and inner walls of which are provided respectivelywith parallel flat sides extending longitudinally thereof, each flatside of each wall being angularly situated with respect to its adjacentflat side in combination with helical conducting coils moldparallel flatsides ed respectively to the outer wall at the angles formed by adjacentflat sides, and to the inner wall at points between the angles formed bythe adjacent flat sides, formlng ventilating spaces between therespective coils and the respective walls to which they are attached,the remaining portions of the coils being exposed.

, v 10. Asan article of manufacture, an elongated hollow body ofinsulating material, the outer and inner walls of which are providedrespectively with parallel fiat sides extending longitudinally thereof,each flat side of each wall being an ularly situated with respect to itsadjacent at side in combination with helical conducting coils securedrespectively to the outer wall at the angles formed by adjacent flatsides, and to the inner wall at points between the angles formed by theadjacent flat sides, forming ventilating spaces between the respectivecoils and the respective walls to which they are attached.

In witness whereof I have hereunto set my hand at the borough ofManhattan, city and State of New York, this 18 day of Sep-- tember,1919.

LOUIS STEIN BERGER.

In presence of- ZrrA'M. GRAHAM.

